Question

An organic compound contains 50 oxygen and 12.5 hydrogen

Answer 1

S O L U T I O N :

• => 50% oxygen by mass means 50 grams of oxygen in 100 g of solution and 12.5% hydrogen means 12.5 gram of hydrogen in 100 gram of solution.

• => 12.5+50=62.5 grams out of 100 g is hydrogen and oxygen what about compound, remaining 37.5 gram must be carbon.

• => So now we have three components i.e. C,H and O. now find fraction of hydrogen.

• => Mole fraction = moles of hydrogen/ total moles

• => 12.5/1+50/16+37.5/12/12.5/1

• => 0.66 i.e. 2/3